Array substrate with feedback signal line, display apparatus and control method thereof

ABSTRACT

An array substrate has a display area and a bonding region. The display area includes a distal region away from the bonding region. The array substrate includes a base, a common electrode located in the display area, and at least one first common signal line and at least one feedback signal line that are disposed on the base. The at least one first common signal line and the at least one feedback signal line are coupled to a portion of the common electrode located in the distal region, and extend to the bonding region to be coupled to a circuit board. A feedback signal line transmits a common voltage signal of the portion of the common electrode located in the distal region to the circuit board. A first common signal line transmits a first compensation common voltage signal to the portion of the common electrode located in the distal region.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a national phase entry under 35 USC 371 ofInternational Patent Application No. PCT/CN2020/140386 filed on Dec. 28,2020, which claims priority to Chinese Patent Application No.202010167374.8, filed on Mar. 11, 2020, which are incorporated herein byreference in their entirety.

TECHNICAL FIELD

The present disclosure relates to the field of display technologies, andin particular, to an array substrate, a display apparatus and a controlmethod thereof.

BACKGROUND

In recent years, with the advancement of display technologies, usershave higher and higher requirements for viewing experience. Liquidcrystal display technology has been successfully applied to displayproducts such as notebook computers, display screens, and televisions.With an increase in the possession of liquid crystal display products,people have also put forward higher requirements for display quality ofliquid crystal display products.

SUMMARY

In one aspect, an array substrate is provided. The array substrate has adisplay area and a bonding region located at a side of the display area,and the display area includes a distal region away from the bondingregion. The array substrate includes: a base, a common electrodedisposed on the base and located in the display area, and at least onefirst common signal line and at least one feedback signal line that aredisposed on the base. The at least one first common signal line and theat least one feedback signal line are coupled to a portion of the commonelectrode located in the distal region, and the at least one firstcommon signal line and the at least one feedback signal line extend tothe bonding region and are configured to be coupled to a circuit board.A feedback signal line is configured to transmit a common voltage signalof the portion of the common electrode located in the distal region tothe circuit board. A first common signal line is configured to transmita first compensation common voltage signal from the circuit board to theportion of the common electrode located in the distal region.

In some embodiments, the at least one feedback signal line includes twofeedback signal lines, and the two feedback signal lines are disposed ontwo opposite sides of the display area.

In some embodiments, the at least one first common signal line includestwo first common signal lines, and the two first common signal lines aredisposed on two opposite sides of the display area. A position where thefirst common signal line is coupled to the common electrode is locatedon a side of the common electrode away from the bonding region.

In some embodiments, the display area further includes a proximal regionproximate to the bonding region. The array substrate further includes atleast one second common signal line disposed on the base. The at leastone second common signal line is coupled to a portion of the commonelectrode located in the proximal region, and the at least one secondcommon signal line extends to the bonding region and is configured to becoupled to the circuit board. A second common signal line is configuredto transmit the common voltage signal or a second compensation commonvoltage signal from the circuit board to the portion of the commonelectrode located in the proximal region.

In some embodiments, the at least one second common signal line includestwo second common signal lines, and the two second common signal linesare disposed at two opposite ends of a side of the proximal regionproximate to the bonding region.

In some embodiments, the display area further includes a middle regionlocated between the distal region and the proximal region. The arraysubstrate further includes at least one third common signal linedisposed on the base. The at least one third common signal line extendsto the bonding region and is configured to be coupled to the circuitboard. The at least one third common signal line is coupled to a portionof the common electrode located in the middle region. A third commonsignal line is configured to transmit a third compensation commonvoltage signal from the circuit board to the portion of the commonelectrode located in the middle region.

In some embodiments, the at least one third common signal line includestwo third common signal lines, and the two third common signal lines aredisposed on two opposite sides of the display area.

In some embodiments, the at least one feedback signal line and the atleast one first common signal line are made of a same material anddisposed in a same layer.

In some embodiments, the array substrate further includes a connectinglead and a conductive frame. The connecting lead is disposed outside thedistal region of the display area, and the at least one first commonsignal line is coupled to the connecting lead. The conductive framesurrounds the display area, and the at least one feedback signal line,the connecting lead and the portion of the common electrode located inthe distal region are coupled to the conductive frame, so that the atleast one first common signal line is coupled to the portion of thecommon electrode located in the distal region through the connectinglead and the conductive frame, and the at least one feedback signal lineis coupled to the portion of the common electrode located in the distalregion through the conductive frame.

In some embodiments, the at least one first common signal line, theconnecting lead and the conductive frame are made of a same material anddisposed in a same layer.

In some embodiments, a resistance of the first common signal line, aresistance of the second common signal line, and a resistance of thethird common signal line are all less than or equal to 300Ω; and aresistance of the feedback signal line is less than or equal to 1000Ω.

In some embodiments, the array substrate further includes data linesdisposed on the base. The data lines are arranged closer to the basethan the common electrode in a direction perpendicular to the base, andorthogonal projections of the data lines on the base at least partiallyoverlap with an orthogonal projection of the common electrode on thebase.

In some embodiments, the array substrate has a plurality of sub-pixelregions. The common electrode includes a plurality of sub-electrodes anda plurality of first conductive patterns. A sub-electrode is located inat least one sub-pixel region, and adjacent sub-electrodes are coupledthrough at least one first conductive pattern.

In another aspect, a display apparatus is provided. The displayapparatus includes the array substrate as described in any of the aboveembodiments and a circuit board. The circuit board is bonded to thebonding region in the array substrate. The circuit board includes acontrol circuit, and the control circuit is coupled to the first commonsignal line and the feedback signal line in the array substrate. Thecontrol circuit is configured to generate the first compensation commonvoltage signal according to the common voltage signal transmitted by thefeedback signal line, and transmit the first compensation common voltagesignal to the first common signal line.

In some embodiments, the control circuit includes an inverter and afirst operational amplifier. The inverter is coupled to the feedbacksignal line, and the inverter is configured to invert the common voltagesignal transmitted by the feedback signal line. The first operationalamplifier is coupled to the inverter and the first common signal line,and the first operational amplifier is configured to amplify an invertedsignal from the inverter to generate the first compensation commonvoltage signal, and transmit the first compensation common voltagesignal to the first common signal line.

In some embodiments, the display area further includes a proximal regionproximate to the bonding region. The array substrate further includes atleast one second common signal line disposed on the base. The at leastone second common signal line is coupled to a portion of the commonelectrode located in the proximal region, and the at least one secondcommon signal line extends to the bonding region and is configured to becoupled to the circuit board. The control circuit further includes asecond operational amplifier. The second operational amplifier iscoupled to the inverter and a second common signal line. The secondoperational amplifier is configured to amplify the inverted signal fromthe inverter to generate a second compensation common voltage signal,and transmit the second compensation common voltage signal to the secondcommon signal line. An amplification factor of the second operationalamplifier is less than an amplification factor of the first operationalamplifier.

In some embodiments, the display area further includes a proximal regionproximate to the bonding region and a middle region located between thedistal region and the proximal region. The array substrate furtherincludes at least one third common signal line disposed on the base. Theat least one third common signal line is coupled to a portion of thecommon electrode located in the middle region, and the at least onethird common signal line extends to the bonding region and is configuredto be coupled to the circuit board. The control circuit further includesa third operational amplifier. The third operational amplifier iscoupled to the inverter and a third common signal line. The thirdoperational amplifier is configured to amplify the inverted signal fromthe inverter to generate a third compensation common voltage signal, andtransmit the third compensation common voltage signal to the thirdcommon signal line. An amplification factor of the third operationalamplifier is less than the amplification factor of the first operationalamplifier.

In yet another aspect, a control method of the display apparatus asdescribed in any of the above embodiments is provided, including:transmitting, by the feedback signal line, the common voltage signal ofthe portion of the common electrode located in the distal region to thecontrol circuit in the circuit board; and generating, by the controlcircuit, the first compensation common voltage signal according to thecommon voltage signal transmitted by the feedback signal line, andtransmitting, by the control circuit, the first compensation commonvoltage signal to the first common signal line, so as to compensate forthe common voltage signal of the portion of the common electrode locatedin the distal region.

In some embodiments, the display area further includes a proximal regionproximate to the bonding region and a middle region located between thedistal region and the proximal region. The array substrate furtherincludes at least one second common signal line and at least one thirdcommon signal line that are disposed on the base. The at least onesecond common signal line is coupled to a portion of the commonelectrode located in the proximal region, and the at least one secondcommon signal line extends to the bonding region and is configured to becoupled to the circuit board. A second common signal line is configuredto transmit the common voltage signal or a second compensation commonvoltage signal from the circuit board to the portion of the commonelectrode located in the proximal region. The at least one third commonsignal line is coupled to a portion of the common electrode located inthe middle region, and the at least one third common signal line extendsto the bonding region and is configured to be coupled to the circuitboard. A third common signal line is configured to transmit a thirdcompensation common voltage signal from the circuit board to the portionof the common electrode located in the middle region. The control methodof the display apparatus further includes: generating, by the controlcircuit, the second compensation common voltage signal according to thecommon voltage signal transmitted by the feedback signal line, andtransmitting, by the control circuit, the second compensation commonvoltage signal to the second common signal line, so as to compensate forthe common voltage signal of the portion of the common electrode locatedin the proximal region; and/or generating, by the control circuit, thethird compensation common voltage signal according to the common voltagesignal transmitted by the feedback signal line, and transmitting, by thecontrol circuit, the third compensation common voltage signal to thethird common signal line, so as to compensate for the common voltagesignal of the portion of the common electrode located in the middleregion.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to describe technical solutions in the present disclosure moreclearly, accompanying drawings to be used in some embodiments of thepresent disclosure will be introduced briefly below. Obviously, theaccompanying drawings to be described below are merely accompanyingdrawings of some embodiments of the present disclosure, and a person ofordinary skill in the art may obtain other drawings according to thesedrawings.

In addition, the accompanying drawings to be described below may beregarded as schematic diagrams, but are not limitations on an actualsize of a product, an actual process of a method and an actual timing ofa signal involved in the embodiments of the present disclosure.

FIG. 1 is a top view of an array substrate, in accordance with someembodiments;

FIG. 2 is a top view of another array substrate, in accordance with someembodiments;

FIG. 3 is a top view of yet another array substrate, in accordance withsome embodiments;

FIG. 4 illustrates comparison waveform diagrams of a common voltagesignal in an array substrate, in accordance with some embodiments;

FIG. 5 is a top view of an array substrate, in accordance with someembodiments;

FIG. 6 is a top view of yet another array substrate, in accordance withsome embodiments;

FIG. 7 is a top view of yet another array substrate, in accordance withsome embodiments;

FIG. 8 is a top view of yet another array substrate, in accordance withsome embodiments;

FIG. 9 is a top view of yet another array substrate, in accordance withsome embodiments;

FIG. 10 is a top view of yet another array substrate, in accordance withsome embodiments;

FIG. 11 is a top view of yet another array substrate, in accordance withsome embodiments;

FIG. 12 is a sectional view of the array substrate in FIG. 11 takenalong the C-C′ direction;

FIG. 13 is a diagram showing a structure of a display apparatus, inaccordance with some embodiments;

FIG. 14 is a diagram showing a structure of another display apparatus,in accordance with some embodiments;

FIG. 15 is a diagram showing a structure of yet another displayapparatus, in accordance with some embodiments;

FIG. 16 is a diagram showing a structure of a control circuit, inaccordance with some embodiments;

FIG. 17 is a diagram showing a structure of yet another displayapparatus, in accordance with some embodiments;

FIG. 18 is a diagram showing a structure of another control circuit, inaccordance with some embodiments;

FIG. 19 is a diagram showing a structure of yet another displayapparatus, in accordance with some embodiments; and

FIG. 20 is a diagram showing a structure of yet another control circuit,in accordance with some embodiments.

DETAILED DESCRIPTION

Technical solutions in some embodiments of the present disclosure willbe described clearly and completely below with reference to accompanyingdrawings. Obviously, the described embodiments are merely some but notall embodiments of the present disclosure. All other embodimentsobtained on a basis of the embodiments of the present disclosure by aperson of ordinary skill in the art shall be included in the protectionscope of the present disclosure.

Unless the context requires otherwise, throughout the description andthe claims, the term “comprise” and other forms thereof such as thethird-person singular form “comprises” and the present participle form“comprising” are construed as an open and inclusive meaning, i.e.,“including, but not limited to.” In the description of thespecification, the terms such as “one embodiment”, “some embodiments”,“exemplary embodiments”, “example”, “specific example” or “someexamples” are intended to indicate that specific features, structures,materials or characteristics related to the embodiment(s) or example(s)are included in at least one embodiment or example of the presentdisclosure. Schematic representations of the above terms do notnecessarily refer to the same embodiment(s) or example(s). In addition,the specific features, structures, materials, or characteristics may beincluded in any one or more embodiments or examples in any suitablemanner.

Below, the terms “first” and “second” are used for descriptive purposesonly, and are not to be construed as indicating or implying relativeimportance or implicitly indicating the number of indicated technicalfeatures. Thus, features defined with “first” and “second” mayexplicitly or implicitly include one or more of the features. In thedescription of the embodiments of the present disclosure, “a pluralityof”, “the plurality of” or “multiple” means two or more unless otherwisespecified.

In the description of some embodiments, the expressions “coupled” and“connected” and their derivatives may be used. For example, the term“connected” may be used in the description of some embodiments toindicate that two or more components are in direct physical orelectrical contact with each other. For another example, the term“coupled” may be used in the description of some embodiments to indicatethat two or more components are in direct physical or electricalcontact. However, the term “coupled” or “communicatively coupled” mayalso mean that two or more components are not in direct contact witheach other, but still cooperate or interact with each other. Theembodiments disclosed herein are not necessarily limited to the contentsherein.

The phrase “at least one of A, B and C” has a same meaning as the phrase“at least one of A, B or C”, and they both include the followingcombinations of A, B and C: only A, only B, only C, a combination of Aand B, a combination of A and C, a combination of B and C, and acombination of A, B and C.

The phrase “A and/or B” includes the following three combinations: onlyA, only B, and a combination of A and B.

In the related art, for a display apparatus with a large size and anarrow bezel, such as a high aperture advanced super dimensionalswitching (HADS) display apparatus, the bezel thereof is relativelynarrow (e.g., a width of the bezel is 3.5 mm), so that a width of asignal line is small, a resistance of the signal line increases, and arecovery capability of the signal line decreases. In addition, highresolution of the display apparatus (e.g., the resolution is(2560×1440)) and a large coupling capacitance (e.g., a couplingcapacitance formed between a data line and a common electrode) in thedisplay apparatus may result in signal distortion in a signaltransmission process and potential drift, which affects normal chargingand discharging of pixels, so that line image sticking may appear andare difficult to eliminate in a display period of the display apparatus.An image sticking is an image retention, in which a static pictureremains on a screen for a long time. This phenomenon will change with apassage of time and a change of the picture, and finally disappear. Forexample, there may be accumulation of charges in a pixel electrode ofthe display apparatus due to the coupling capacitance and other reasons.In a case where the charges accumulate to a certain extent, a potentialdifference and an electric field may be formed between the pixelelectrode and a common electrode, which causes liquid crystals tocontinue to deflect. The charges will appear as image sticking in aprocess of slowly disappearing, thereby affecting a display effect.

The embodiments of the present disclosure provide an array substrate100. As shown in FIG. 1 , the array substrate 100 has a display area(also referred to as an active area) AA and a bonding region B locatedat a side of the display area. The display area includes a distal regionF away from the bonding region B.

The array substrate 100 includes a base 10, a common electrode 20, afirst common signal line 30, and a feedback signal line 40.

The common electrode 20 is disposed on the base 10 and located in thedisplay area.

For example, a material of the common electrode 20 may be a transparentconductive material including indium tin oxide (ITO).

The first common signal line 30 and the feedback signal line 40 aredisposed on the base 10.

The first common signal line 30 and the feedback signal line 40 arecoupled to a portion of the common electrode 20 located in the distalregion F. The first common signal line 30 and the feedback signal line40 extend to the bonding region B to be coupled to a circuit board.

The feedback signal line 40 is configured to transmit a common voltagesignal of the portion of the common electrode 20 located in the distalregion F to the circuit board.

The first common signal line 30 is configured to transmit a firstcompensation common voltage signal to the portion of the commonelectrode 20 located in the distal region F.

The first compensation common voltage signal is a signal obtained by thecircuit board compensating for the common voltage signal according tothe common voltage signal.

For example, an area of the distal region F accounts for ⅛ to ⅕ of anarea of the display area, e.g., the area of the distal region F accountsfor ⅙ of the area of the display area.

In this case, the feedback signal line 40 transmits the common voltagesignal of the portion of the common electrode 20 located in the distalregion F to the circuit board; the circuit board obtains the firstcompensation common voltage signal according to the common voltagesignal; and transmits the first compensation common voltage signal tothe portion of the common electrode 20 located in the distal region Fthrough the first common signal line 30, so as to compensate for thecommon voltage signal of the portion of the common electrode 20 locatedin the distal region F, which may avoid delay in the common voltagesignal of the portion of the common electrode 20 located in the distalregion F, thereby improving the display effect.

Therefore, the array substrate 100 provided by the embodiments of thepresent disclosure includes the first common signal line 30 and thefeedback signal line 40, and the first common signal line 30 and thefeedback signal line 40 are coupled to the portion of the commonelectrode 20 located in the distal region F. The feedback signal line 40transmits the common voltage signal of the portion of the commonelectrode 20 located in the distal region F to the circuit board, so asto generate the first compensation common voltage signal. The firstcommon signal line 30 transmits the first compensation common voltagesignal to the portion of the common electrode 20 located in the distalregion F, so as to compensate for the common voltage signal of theportion of the common electrode 20 located in the distal region F. As aresult, the delay in the common voltage signal of the portion of thecommon electrode 20 located in the distal region F may be avoided, andthe image sticking appearing during display caused by the potentialdrift of the common voltage signal may also be avoided, therebyimproving the display effect.

In some embodiments, as shown in FIG. 2 , the array substrate 100includes two feedback signal lines 40, and the two feedback signal lines40 are disposed on two opposite sides of the display area.

In this case, in a process where the feedback signal line 40 transmitsthe common voltage signal of the portion of the common electrode 20located in the distal region F to the circuit board, transmission timeof the common voltage signal may be shortened, and the common voltagesignal may be quickly transmitted to the circuit board, so that anefficiency of compensating for the common voltage signal may beimproved.

In some embodiments, as shown in FIG. 3 , the array substrate 100includes two first common signal lines 30, and the two first commonsignal lines 30 are disposed on the two opposite sides of the displayarea. Positions where the first common signal lines 30 are coupled tothe common electrode 20 are located on a side of the common electrode 20away from the bonding region B.

The positions where the first common signal lines 30 are coupled to thecommon electrode 20 are the positions, in the portion of the commonelectrode 20 located in the distal region F, that are farthest away fromthe bonding region B.

Since there is a large gap between the portion of the common electrode20 located in the distal region F and the circuit board, signals aregreatly affected by the coupling capacitance in the array substrate 100in a process where the circuit board transmits the signals to theportion of the common electrode 20 located in the distal region F.Therefore, the first common signal line 30 transmits the firstcompensation common voltage signal to a side of the portion of thecommon electrode 20 located in the distal region F away from the bondingregion B, so as to compensate for the common voltage signal of theportion of the common electrode 20 located in the distal region F. As aresult, it may be possible to improve a problem of serious delay in thecommon voltage signal of the portion of the common electrode 20 locatedin the distal region F, and avoid a distortion of the common voltagesignal. In addition, the two first common signal lines 30 may shortentime for compensating for the common voltage signal of the portion ofthe common electrode 20 located in the distal region F, and improve theefficiency of compensating for the common voltage signal of the commonelectrode 20.

For example, part (a) in FIG. 4 is waveform diagrams before the commonvoltage signal in the array substrate 100 is compensated, and part (b)in FIG. 4 is waveform diagrams after the common voltage signal in thearray substrate 100 is compensated, wherein a horizontal axis representstime (μs), and a vertical axis represents a voltage (V) of the commonvoltage signal. According to a common voltage signal Vleft on one of thetwo first common signal lines 30 located on one of the two oppositesides of the display area (e.g., a left side of the array substrate 100in FIG. 3 ), and a common voltage signal Vright on another of the twofirst common signal lines 30 located on another of the two oppositesides of the display area (e.g., a right side of the array substrate 100in FIG. 3 ), it may be seen that a signal delay degree of the waveformsof the common voltage signals in part (a) in FIG. 4 is relatively large,and a potential drift degree of the waveforms of the common voltagesignals in part (b) in FIG. 4 is obviously weakened compared with apotential drift degree of the waveforms of the common voltage signals inpart (a) in FIG. 4 , which may avoid the distortion of the commonvoltage signal and improve a recovery capability of the first commonsignal line 30.

In some embodiments, as shown in FIG. 5 , the display area furtherincludes a proximal region N proximate to the bonding region B. Thearray substrate 100 further includes a second common signal line 50. Thesecond common signal line 50 is coupled to a portion of the commonelectrode 20 located in the proximal region N, and the second commonsignal line 50 extends to the bonding region B to be coupled to thecircuit board.

The second common signal line 50 is configured to transmit the commonvoltage signal or a second compensation common voltage signal to theportion of the common electrode 20 located in the proximal region N.

For example, an area of the proximal region N accounts for ⅛ to ⅕ of thearea of the display area, e.g., the area of the proximal region Naccounts for ⅙ of the area of the display area.

In this case, the feedback signal line 40 transmits the common voltagesignal of the portion of the common electrode 20 located in the distalregion F to the circuit board; the circuit board obtains the secondcompensation common voltage signal according to the common voltagesignal; and transmits the second compensation common voltage signal tothe portion of the common electrode 20 located in the proximal region Nthrough the second common signal line 50, so as to compensate for acommon voltage signal of the portion of the common electrode 20 locatedin the proximal region N, which may avoid delay in the common voltagesignal of the portion of the common electrode 20 located in the proximalregion N, thereby improving the display effect.

In some embodiments, as shown in FIG. 6 , the array substrate 100includes two second common signal lines 50, and the two second commonsignal lines 50 are disposed at two opposite ends of a side of theproximal region N proximate to the bonding region B.

In this case, in a process where the second common signal line 50transmits the second compensation common voltage signal to the portionof the common electrode 20 located in the proximal region N, the twosecond common signal lines 50 may shorten the transmission time of thesecond compensation common voltage signal, so that the common voltagesignal of the portion of the common electrode 20 located in the proximalregion N may be compensated quickly, thereby improving the efficiency ofcompensating for the common voltage signal of the common electrode 20.

In some embodiments, as shown in FIG. 7 , the display area furtherincludes a middle region M located between the distal region F and theproximal region N. The array substrate 100 further includes a thirdcommon signal line 60 disposed on the base 10.

The third common signal line 60 extends to the bonding region B to becoupled to the circuit board. The third common signal line 60 is coupledto a portion of the common electrode 20 located in the middle region M.

The third common signal line 60 is configured to transmit a thirdcompensation common voltage signal to the portion of the commonelectrode 20 located in the middle region M.

For example, an area of the middle region M accounts for ⅛ to ⅕ of thearea of the display area, e.g., the area of the middle region M accountsfor ⅙ of the area of the display area.

In this case, the feedback signal line 40 transmits the common voltagesignal of the portion of the common electrode 20 located in the distalregion F to the circuit board; the circuit board compensates for thecommon voltage signal according to the common voltage signal, so as toobtain the third compensation common voltage signal; and the thirdcommon signal line 60 transmits the third compensation common voltagesignal to the portion of the common electrode 20 located in the middleregion M, so as to compensate for a common voltage signal of the portionof the common electrode 20 located in the middle region M, which mayavoid delay in the common voltage signal of the portion of the commonelectrode 20 located in the middle region M, thereby improving thedisplay effect.

In some embodiments, as shown in FIG. 8 , the array substrate 100includes two third common signal lines 60, and the two third commonsignal lines 60 are disposed on the two opposite sides of the displayarea.

In this case, in a process where the third common signal lines 60transmit the third compensation common voltage signal to the portion ofthe common electrode 20 located in the middle region M, the two thirdcommon signal lines 60 may shorten the transmission time of the thirdcompensation common voltage signal, so that the common voltage signal ofthe portion of the common electrode 20 located in the middle region Mmay be compensated quickly, thereby improving the efficiency ofcompensating for the common voltage signal of the common electrode 20.

In some embodiments, as shown in FIG. 9 , the array substrate 100includes two first common signal lines 30, two second common signallines 50, two third common signal lines 60, and two feedback signallines 40, and beneficial effects are similar to the above, which willnot be repeated here.

In some embodiments, the feedback signal line(s) 40 and the first commonsignal line(s) 30 are made of a same material and disposed in a samelayer.

For example, the material of the feedback signal line(s) 40 and thefirst common signal line(s) 30 may include a metal material such ascopper (Cu), aluminum (Al), molybdenum (Mo), titanium (Ti), chromium(Cr), and tungsten (W).

In this case, the feedback signal line(s) 40 and the first common signalline(s) 30 may be formed synchronously, so that production processes maybe simplified in terms of process.

In some embodiments, in a case where the array substrate 100 includesthe second common signal line(s) 50, the second common signal line(s) 50and the first common signal line(s) 30 are made of a same material anddisposed in a same layer.

In this case, the second common signal line(s) 50 and the first commonsignal line(s) 30 may be formed synchronously, so that the productionprocesses may be simplified in terms of process.

In some embodiments, in a case where the array substrate 100 includesthe third common signal line(s) 60, the third common signal line(s) 60and the first common signal line(s) 30 are made of a same material anddisposed in a same layer.

In this case, the third common signal line(s) 60 and the first commonsignal line(s) 30 may be formed synchronously, so that the productionprocesses may be simplified in terms of process.

In some embodiments, as shown in FIG. 10 , the array substrate 100further includes a connecting lead 70 and a conductive frame 80.

The connecting lead 70 is disposed outside the distal region F of thedisplay area, and the first common signal line(s) 30 are coupled to theconnecting lead 70.

The conductive frame 80 surrounds the display area, the feedback signalline(s) 40, the connecting lead 70 and the portion of the commonelectrode 20 located in the distal region F are coupled to theconductive frame 80, so that the first common signal line(s) 30 arecoupled to the portion of the common electrode 20 located in the distalregion F through the connecting lead 70 and the conductive frame 80, andthe feedback signal line(s) 40 are coupled to the portion of the commonelectrode 20 located in the distal region F through the conductive frame80.

For example, the conductive frame 80 may be made of a metal material,such as copper, aluminum, or molybdenum.

Since the material of the common electrode 20 is different from thematerial of the first common signal line(s) 30, the first common signalline(s) 30 are coupled to the portion of the common electrode 20 locatedin the distal region F through the connecting lead 70 and the conductiveframe 80, and the feedback signal line(s) 40 are coupled to the portionof the common electrode 20 located in the distal region F through theconductive frame 80, which may reduce a contact resistance between thefirst common signal line 30 and the common electrode 20 and a contactresistance between the feedback signal line 40 and the common electrode20, and may reduce a loss of signal transmission between the firstcommon signal line 30 and the common electrode 20 and a loss of signaltransmission between the feedback signal line 40 and the commonelectrode 20.

In some embodiments, as shown in FIG. 10 , in a case where the arraysubstrate 100 includes the second common signal line(s) 50 and the thirdcommon signal line(s) 60, the second common signal line(s) 50 and thethird common signal line(s) 60 are coupled to the common electrode 20through the conductive frame 80. In this case, a contact resistancebetween the second common signal line 50 and the common electrode 20 anda contact resistance between the third common signal line 60 and thecommon electrode 20 may be reduced, and a loss of signal transmissionbetween the second common signal line 50 and the common electrode 20 anda loss of signal transmission between the third common signal line 60and the common electrode 20 may be reduced.

In some embodiments, the first common signal line(s) 30, the connectinglead 70 and the conductive frame 80 are made of a same material anddisposed in a same layer.

In this case, the first common signal line(s) 30, the connecting lead 70and the conductive frame 80 may be formed synchronously, so that theproduction processes may be simplified in terms of process.

In some embodiments, in a case where the array substrate 100 furtherincludes the second common signal line(s) 50 and the third common signalline(s) 60, a resistance of the first common signal line 30, aresistance of the second common signal line 50, and a resistance of thethird common signal line 60 are all less than or equal to 300Ω. Aresistance of the feedback signal line 40 is less than or equal to1000Ω.

It will be noted that in a case where the array substrate 100 is appliedto a display apparatus, specific values of the resistances of the firstcommon signal line 30, the second common signal line 50, the thirdcommon signal line 60, and the feedback signal line 40 may be set by aperson skilled in the art according to actual conditions (e.g.,different resolution and other factors) of the display apparatus.

For example, the resistance (RV1) of the first common signal line 30,the resistance (RV2) of the second common signal line 50, the resistance(RV3) of the third common signal line 60, and the resistance (RVF) ofthe feedback signal line 40 satisfy RV1:RV2:RV3:RVF=2:1:2:5. Forexample, the resistance of the first common signal line 30 is 200Ω, theresistance of the second common signal line 50 is 100Ω, the resistanceof the third common signal line 60 is 200Ω, and the resistance of thefeedback signal line 40 is 500Ω.

In some embodiments, as shown in FIG. 11 , the array substrate 100 has aplurality of sub-pixel regions P. The common electrode 20 includes aplurality of sub-electrodes 202 and a plurality of first conductivepatterns 201.

A sub-electrode 202 is located in at least one sub-pixel region P.Adjacent sub-electrodes 202 are coupled through at least one firstconductive pattern 201.

In this case, the sub-electrodes 202 in all the sub-pixel regions P maybe connected as a whole through the first conductive patterns 201.Therefore, when the first common signal line 30 transmits thecompensated common voltage signal to the sub-electrodes 202 located inthe distal region F, the compensated common voltage signal may betransmitted to all the sub-electrodes 202, and common voltage signals ofall the sub-electrodes 202 may be compensated, thereby preventing thecommon voltage signals of the sub-electrodes 202 from being delayed.

In some embodiments, as shown in FIG. 11 , the array substrate 100further includes data lines 90 disposed on the base 10.

As shown in FIG. 12 , the data lines 90 are arranged closer to the base10 than the common electrode 20 in a direction perpendicular to the base10. Orthogonal projections of the data lines 90 on the base 10 at leastpartially overlap with an orthogonal projection of the common electrode20 on the base 10.

In some embodiments, in a case where the array substrate 100 is appliedto the display apparatus, as shown in FIG. 13 , a display apparatus 300includes an opposite substrate 400 disposed opposite to the arraysubstrate 100, a liquid crystal layer 500 disposed between the arraysubstrate 100 and the opposite substrate 400, and a backlight module 600disposed on a side of the array substrate 100 away from the oppositesubstrate 400. The opposite substrate 400 includes a black matrix (BM).

On this basis, since the orthogonal projection of the data line 90 onthe base 10 at least partially overlaps with the orthogonal projectionof the common electrode 20 on the base 10, an electric field will beformed between the data line 90 and the common electrode 20 uponapplication of power, so that liquid crystal molecules in the liquidcrystal layer 500 rotates under an action of the electric field, whichmay prevent light emitted from the backlight module 600 from leaking ata position of the data line 90, so as to reduce an area of the blackmatrix at the position of the data line 90, thereby increasing anaperture ratio and facilitating a realization of the narrow bezel of thedisplay apparatus 300.

In some embodiments, as shown in FIGS. 11 and 12 , the array substrate100 further includes a thin film transistor (TFT) disposed in thesub-pixel region P.

As shown in FIG. 11 , the plurality of sub-pixel regions P may bearranged in an array. Sub-pixel regions P arranged in a row direction Xare referred to as sub-pixel regions in a same row, and sub-pixelregions P arranged in a column direction Y are referred to as sub-pixelregions in a same column. The TFTs in the sub-pixel regions in the samerow may be electrically connected to a gate line 91. The TFTs in thesub-pixel regions in the same column may be electrically connected tothe data line 90. In this case, a sub-electrode 202 may correspond tothe sub-pixel regions in the same row, and sub-electrodes 202 in twoadjacent rows are coupled through the first conductive pattern 201.

In some embodiments, the first common signal line(s) 30 and the gateline(s) 91 are made of a same material and disposed in a same layer.Therefore, the first common signal line(s) 30 and the gate line(s) 91may be formed synchronously in terms of process.

In addition, in some embodiments, as shown in FIGS. 11 and 12 , thearray substrate 100 further includes pixel electrodes 21 disposed on aside of the common electrode 20 proximate to the base 10. The TFTincludes a gate 12, an active layer 16, and a source 13 and a drain 14that are disposed on the base 10 in sequence. A pixel electrode 21 iscoupled to the drain 14 of the TFT through a second conductive pattern17, and the second conductive pattern 17 and the common electrode 20 aremade of a same material and disposed in a same layer. The arraysubstrate 100 further includes a semiconductor pattern 22, thesemiconductor pattern 22 is located on a side of the data line 90proximate to the base 10, and the semiconductor pattern 22 and theactive layer 16 of the TFT are made of a same material and disposed in asame layer.

In terms of process, referring to FIGS. 11 and 12 , the pixel electrode21 is formed on the base 10; the gate 12 and the active layer 16 of theTFT are sequentially formed on a side of the pixel electrode 21 awayfrom the base; the source 13 and the drain 14 are formed on a side ofthe active layer 16 away from the base 10 by using a single slit mask(SSM); a passivation layer 11 is formed on a side of the TFT away fromthe base 10; and the common electrode 20 is formed on a side of thepassivation layer 11 away from the base 10.

The embodiments of the present disclosure further provide the displayapparatus 300. As shown in FIG. 14 , the display apparatus 300 includesthe array substrate 100 in any of the above embodiments and a circuitboard 200.

The circuit board 200 is bonded to the bonding region B in the arraysubstrate 100.

The circuit board 200 includes a control circuit 210, and the controlcircuit 210 is coupled to the first common signal line 30 and thefeedback signal line 40 in the array substrate 100.

The control circuit 210 is configured to generate a first compensationcommon voltage signal according to the common voltage signal transmittedby the feedback signal line 40, and transmit the first compensationcommon voltage signal to the first common signal line 30.

It will be understood that the first compensation common voltage signalis obtained after the control circuit 210 compensates for the commonvoltage signal according to the common voltage signal.

The feedback signal line 40 and the first common signal line 30 arecoupled to the portion of the common electrode 20 located in the distalregion F.

For example, the circuit board 200 may be a printed circuit board (PCB)or a flexible printed circuit (FPC) board or the like.

Therefore, the first compensation common voltage signal generated by thecontrol circuit 210 according to the common voltage signal transmittedby the feedback signal line 40 is transmitted to the portion of thecommon electrode 20 located in the distal region F through the firstcommon signal line 30, so as to compensate for the common voltage signalof the portion of the common electrode 20 located in the distal regionF. As a result, the delay in the common voltage signal of the portion ofthe common electrode 20 located in the distal region F may be avoided,thereby improving the display effect.

In some embodiments, as shown in FIG. 15 , the control circuit 210includes an inverter 211 and a first operational amplifier 212.

The inverter 211 is coupled to the feedback signal line 40.

The first operational amplifier 212 is coupled to the inverter 211 andthe first common signal line 30.

The inverter 211 is configured to invert the common voltage signaltransmitted by the feedback signal line 40.

The first operational amplifier 212 is configured to amplify an invertedsignal from the inverter 211 to generate the first compensation commonvoltage signal, and transmit the first compensation common voltagesignal to the first common signal line 30.

On this basis, the common voltage signal transmitted by the feedbacksignal line 40 (i.e., the common voltage signal of the portion of thecommon electrode 20 located in the distal region F) is distorted andpotential drift occurs. After the common voltage signal is inverted bythe inverter 211 and amplified by the first operational amplifier 212,the generated first compensation common voltage signal may compensatefor the distorted common voltage signal of the portion of the commonelectrode 20 located in the distal region F, thereby avoiding the delayin the common voltage signal of the portion of the common electrode 20located in the distal region F.

For example, as shown in FIG. 16 , the inverter 211 includes an N-typetransistor T_(N) and a P-type transistor T_(P). A control electrode ofthe N-type transistor T_(N) is coupled to a first input terminal IN1, afirst electrode of the N-type transistor T_(N) is coupled to a firstvoltage terminal VSS, and a second electrode of the N-type transistorT_(N) is coupled to a first output terminal Out1. A control electrode ofthe P-type transistor T_(P) is coupled to the first input terminal IN1,a first electrode of the P-type transistor T_(P) is coupled to a secondvoltage terminal VDD, and a second electrode of the P-type transistorT_(P) is coupled to the first output terminal Out1.

The first input terminal IN1 is coupled to the feedback signal line 40,and the first output terminal Out1 is coupled to the first operationalamplifier 212.

A voltage of the first voltage terminal VSS and a voltage of the secondvoltage terminal VDD are each an operating voltage of the inverter 211.When the inverter 211 is operating, the voltage of the first voltageterminal VSS is at a direct current low level and may be used as anegative electrode of a power supply, and the voltage of the secondvoltage terminal VDD is at a direct current high level and may be usedas a positive electrode of the power supply.

In this case, when a voltage of the common voltage signal transmitted bythe feedback signal line 40 makes the N-type transistor T_(N) turned on,the P-type transistor T_(P) is turned off, the common voltage signal isa high-level signal, the N-type transistor T_(N) transmits a firstvoltage signal received from the first voltage terminal VSS to the firstoutput terminal Out1, and a signal of the first output terminal Out1 isa low-level signal, which realizes an inversion of the common voltagesignal. Similarly, when the voltage of the common voltage signaltransmitted by the feedback signal line 40 makes the P-type transistorT_(P) turned on, the N-type transistor T_(N) is turned off, the commonvoltage signal is a low-level signal, the P-type transistor T_(P)transmits a second voltage signal received from the second voltageterminal VDD to the first output terminal Out1, and the signal of thefirst output terminal Out1 is a high-level signal, which realizes aninversion of the common voltage signal.

For example, as shown in FIG. 16 , the first operational amplifier 212includes a first amplifier OP1, a first resistor R1, a second resistorR2, and a third transistor R3.

A positive input terminal of the first amplifier OP1 is coupled to asecond end of the third resistor R3, a negative input terminal of thefirst amplifier OP1 is coupled to a first end of the first resistor R1and a first end of the second resistor R2, and an output terminal of thefirst amplifier OP1 is coupled to a first compensation common voltagesignal output terminal Outf1.

A second end of the first resistor R1 is grounded.

A second end of the second resistor R2 is coupled to the firstcompensation common voltage signal output terminal Outf1.

A first end of the third resistor R3 is coupled to a second inputterminal IN2.

The second input terminal IN2 is coupled to the first output terminalOut1 of the inverter 211, and the first compensation common voltagesignal output terminal Outf1 is coupled to the first common signal line20.

The third resistor R3 is a balance resistor, and the resistance of R3 isthe resistance of R1 and R2 in parallel, i.e., R3=R1//R2, which mayavoid an influence of an input bias current of the first operationalamplifier 212 on an output.

It will be understood that a signal VIN2 received at the second inputterminal IN2 is an inverted signal from the inverter 211, and theinverted signal is an inversion of the common voltage signal. In thiscase, a first compensation common voltage signal Vf1 generated by thefirst operational amplifier 212 is equal to (1+R2/R1) by VIN2, i.e.,Vf1=(1+R2/R1)×VIN2, and an amplification factor of the first operationalamplifier 212 is (1+R2/R1).

It will be noted that those skilled in the art may set the amplificationfactor of the first operational amplifier 212 according to actualconditions (e.g., different resolution, etc.), and select the firstresistor R1 and the second resistor R2 with suitable resistance valuesaccording to a required amplification factor.

In some embodiments, as shown in FIG. 17 , in a case where the arraysubstrate 100 further includes the second common signal line(s) 50, thecontrol circuit 210 further includes a second operational amplifier 213.

The second operational amplifier 213 is coupled to the inverter 211 andthe second common signal line 50. The second operational amplifier 213is configured to amplify the inverted signal from the inverter 211 togenerate a second compensation common voltage signal, and transmit thesecond compensation common voltage signal to the second common signalline 50.

An amplification factor of the second operational amplifier 213 is lessthan the amplification factor of the first operational amplifier 212.

On this basis, the common voltage signal transmitted by the feedbacksignal line 40 (i.e., the common voltage signal of the portion of thecommon electrode 20 located in the distal region F) is distorted andpotential drift occurs. Since a delay degree of the common voltagesignal of the portion of the common electrode 20 located in the proximalregion N is less than a delay degree of the common voltage signal of theportion of the common electrode 20 located in the distal region F, thesecond compensation common voltage signal generated by the secondoperational amplifier 213 amplifying the inverted signal may compensatefor the distorted common voltage signal of the portion of the commonelectrode 20 located in the proximal region N, thereby avoiding thedelay in the common voltage signal of the portion of the commonelectrode 20 located in the proximal region N.

For example, as shown in FIG. 18 , the second operational amplifier 213includes a second amplifier OP2, a fourth resistor R4, a fifth resistorR5, and a sixth resistor R6.

A positive input terminal of the second amplifier OP2 is coupled to asecond end of the sixth resistor R6, a negative input terminal of thesecond amplifier OP2 is coupled to a first end of the fourth resistor R4and a first end of the fifth resistor R5, and an output terminal of thesecond amplifier OP2 is coupled to a second compensation common voltagesignal output terminal Outf2.

A second end of the fourth resistor R4 is grounded.

A second end of the fifth resistor R5 is coupled to the secondcompensation common voltage signal output terminal Outf2.

A first end of the sixth resistor R6 is coupled to the second inputterminal IN2. The second compensation common voltage signal outputterminal Outf2 is coupled to the second common signal line 50.

The sixth resistor R6 is a balance resistor, and the resistance of R6 isthe resistance of R4 and R5 in parallel, i.e., R6=R4//R5, which mayavoid an influence of an input bias current of the second operationalamplifier 213 on an output.

In this case, a second compensation common voltage signal Vf2 generatedby the second operational amplifier 213 is equal to (1+R5/R4) by VIN2,i.e., Vf2=(1+R5/R4)×VIN2, and the amplification factor of the secondoperational amplifier 213 is (1+R5/R4).

It will be noted that those skilled in the art may set the amplificationfactor of the second operational amplifier 213 according to actualconditions (e.g., different resolution, etc.), and select the fourthresistor R4 and the fifth resistor R5 with suitable resistance valuesaccording to a required amplification factor.

In some embodiments, as shown in FIG. 19 , in a case where the arraysubstrate 100 further includes the third common signal line(s) 60, thecontrol circuit 210 further includes a third operational amplifier 214.

The third operational amplifier 214 is coupled to the inverter 211 andthe third common signal line 60. The third operational amplifier 214 isconfigured to amplify the inverted signal from the inverter 211 togenerate a third compensation common voltage signal, and transmit thethird compensation common voltage signal to the third common signal line60.

An amplification factor of the third operational amplifier 214 is lessthan the amplification factor of the first operational amplifier 212.

In a case where the control circuit 210 further includes the secondoperational amplifier 213, the amplification factor of the thirdoperational amplifier 214 is greater than the amplification factor ofthe second operational amplifier 213.

On this basis, the common voltage signal transmitted by the feedbacksignal line 40 (i.e., the common voltage signal of the portion of thecommon electrode 20 located in the distal region F) is distorted andpotential drift occurs. Since a delay degree of the common voltagesignal of the portion of the common electrode 20 located in the middleregion M is less than the delay degree of the common voltage signal ofthe portion of the common electrode 20 located in the distal region F,and is greater than the delay degree of the common voltage signal of theportion of the common electrode 20 located in the proximal region N, thethird compensation common voltage signal generated by the thirdoperational amplifier 214 amplifying the inverted signal may compensatefor the distorted common voltage signal of the portion of the commonelectrode 20 located in the middle region M, thereby avoiding the delayin the common voltage signal of the portion of the common electrode 20located in the middle region M.

For example, as shown in FIG. 20 , the third operational amplifier 214includes a third amplifier OP3, a seventh resistor R7, an eighthresistor R8, and a ninth resistor R9.

A positive input terminal of the third amplifier OP3 is coupled to asecond end of the ninth resistor R9, a negative input terminal of thethird amplifier OP3 is coupled to a first end of the seventh resistor R7and a first end of the eighth resistor R8, and an output terminal of thethird amplifier OP3 is coupled to a third compensation common voltagesignal output terminal Outf3.

A second end of the seventh resistor R7 is grounded.

A second end of the eighth resistor R8 is coupled to the thirdcompensation common voltage signal output terminal Outf3.

A first end of the ninth resistor R9 is coupled to the second inputterminal IN2.

The third compensation common voltage signal output terminal Outf3 iscoupled to the third common signal line 60.

The ninth resistor R9 is a balance resistor, and the resistance of R9 isthe resistance of R7 and R8 in parallel, i.e., R9=R7//R8, which mayavoid an influence of an input bias current of the third operationalamplifier 214 on an output.

In this case, a third compensation common voltage signal Vf3 generatedby the third operational amplifier 214 is equal to (1+R8/R7) by VIN2,i.e., Vf3=(1+R8/R7)×VIN2. The amplification factor of the thirdoperational amplifier 214 is (1+R8/R7).

It will be noted that relationships among the amplification factors ofthe first operational amplifier 212, the second operational amplifier213, and the third operational amplifier 214 in different displayapparatuses are all different. Ranges of the amplification factor of thefirst operational amplifier 212, the amplification factor of the secondoperational amplifier 213, and the amplification factor of the thirdoperational amplifier 214 may be determined according to actualconditions of the display apparatus, such as the resolution and pixelstructures. In addition, resistance values of the first resistor R1 andthe second resistor R2 in the first operational amplifier 212,resistance values of the fourth resistor R4 and the fifth resistor R5 inthe second operational amplifier 213, and resistance values of theseventh resistor R7 and the eighth resistor R8 in the third operationalamplifier 214 are set in advance through multiple experiments and testson the display apparatus before delivery.

In addition, the display apparatus 300 may be any apparatus that candisplay images whether in motion (e.g., a video) or stationary (e.g., astatic image), and regardless of text or image. More specifically, it isanticipated that the described embodiments may be implemented in orassociated with a variety of electronic devices. The variety ofelectronic devices may be (but not limited to), e.g., a mobile phone, awireless device, a personal data assistant (PDA), a hand-held orportable computer, a global positioning system (GPS) receiver/navigator,a camera, an MPEG-4 Part 14 (MP4) video player, a video camera, a gameconsole, a watch, a clock, a calculator, a television monitor, a flatpanel display, a computer monitor, a car display (e.g., an odometerdisplay), a navigator, a cockpit controller and/or display, a display ofcamera view (e.g., a display of a rear view camera in a vehicle), anelectronic photo, an electronic billboard or sign, a projector, abuilding structure, and a packaging and an aesthetic structure (e.g., adisplay for an image of a piece of jewelry).

On the basis of the above, the embodiments of the present disclosurefurther provide a control method of the display apparatus 300 asdescribed in any of the above embodiments, including:

transmitting, by the feedback signal line 40, the common voltage signalof the portion of the common electrode 20 located in the distal region Fto the control circuit 210 in the circuit board 200; and

generating, by the control circuit 210, the first compensation commonvoltage signal according to the common voltage signal transmitted by thefeedback signal line 40, and transmitting, by the control circuit 210,the first compensation common voltage signal to the first common signalline 30, so as to compensate for the common voltage signal of theportion of the common electrode 20 located in the distal region F.

In some embodiments, the control method of the display apparatus 300further includes:

generating, by the control circuit 210, the second compensation commonvoltage signal according to the common voltage signal transmitted by thefeedback signal line, and transmitting, by the control circuit 210, thesecond compensation common voltage signal to the second common signalline 50, so as to compensate for the common voltage signal of theportion of the common electrode 20 located in the proximal region N.

In some embodiments, the control method of the display apparatus 300further includes:

generating, by the control circuit 210, the third compensation commonvoltage signal according to the common voltage signal transmitted by thefeedback signal line 40, and transmitting, by the control circuit 210,the third compensation common voltage signal to the third common signalline 60, so as to compensate for the common voltage signal of theportion of the common electrode 20 located in the middle region M.

Beneficial effects that may be achieved by the control method of thedisplay apparatus 300 provided by the embodiments of the presentdisclosure are the same as beneficial effects of the above displayapparatus 300, and will not be repeated here.

The foregoing descriptions are merely specific implementations of thepresent disclosure, but the protection scope of the present disclosureis not limited thereto. Any changes or replacements that a personskilled in the art could conceive of within the technical scope of thepresent disclosure shall be included in the protection scope of thepresent disclosure. Therefore, the protection scope of the presentdisclosure shall be subject to the protection scope of the claims.

What is claimed is:
 1. An array substrate having a display area and abonding region located at a side of the display area, the display areaincluding a distal region away from the bonding region; the arraysubstrate comprising: a base; a common electrode disposed on the baseand located in the display area; and at least one first common signalline and at least one feedback signal line that are disposed on thebase; the at least one first common signal line and the at least onefeedback signal line being coupled to a portion of the common electrodelocated in the distal region, and the at least one first common signalline and the at least one feedback signal line extending to the bondingregion and being configured to be coupled to a circuit board; aconnecting lead disposed outside the distal region of the display area;the at least one first common signal line being coupled to theconnecting lead; and a conductive frame surrounding the display area;the at least one feedback signal line, the connecting lead and theportion of the common electrode located in the distal region beingcoupled to the conductive frame, so that the at least one first commonsignal line is coupled to the portion of the common electrode located inthe distal region through the connecting lead and the conductive frame,and the at least one feedback signal line is coupled to the portion ofthe common electrode located in the distal region through the conductiveframe; wherein a feedback signal line is configured to transmit a commonvoltage signal of the portion of the common electrode located in thedistal region to the circuit board; and a first common signal line isconfigured to transmit a first compensation common voltage signal fromthe circuit board to the portion of the common electrode located in thedistal region.
 2. The array substrate according to claim 1, wherein theat least one feedback signal line includes two feedback signal lines,and the two feedback signal lines are disposed on two opposite sides ofthe display area.
 3. The array substrate according to claim 1, whereinthe at least one first common signal line includes two first commonsignal lines, and the two first common signal lines are disposed on twoopposite sides of the display area; and a position where the firstcommon signal line is coupled to the common electrode is located on aside of the common electrode away from the bonding region.
 4. The arraysubstrate according to claim 1, wherein the display area furtherincludes a proximal region proximate to the bonding region; and thearray substrate further comprises: at least one second common signalline disposed on the base, the at least one second common signal linebeing coupled to a portion of the common electrode located in theproximal region, and the at least one second common signal lineextending to the bonding region and being configured to be coupled tothe circuit board; wherein a second common signal line is configured totransmit the common voltage signal or a second compensation commonvoltage signal from the circuit board to the portion of the commonelectrode located in the proximal region.
 5. The array substrateaccording to claim 4, wherein the at least one second common signal lineincludes two second common signal lines, and the two second commonsignal lines are disposed at two opposite ends of a side of the proximalregion proximate to the bonding region.
 6. The array substrate accordingto claim 4, wherein the display area further includes a middle regionlocated between the distal region and the proximal region; and the arraysubstrate further comprises: at least one third common signal linedisposed on the base, the at least one third common signal lineextending to the bonding region and being configured to be coupled tothe circuit board; wherein the at least one third common signal line iscoupled to a portion of the common electrode located in the middleregion; and a third common signal line is configured to transmit a thirdcompensation common voltage signal from the circuit board to the portionof the common electrode located in the middle region.
 7. The arraysubstrate according to claim 6, wherein the at least one third commonsignal line includes two third common signal lines, and the two thirdcommon signal lines are disposed on two opposite sides of the displayarea.
 8. The array substrate according to claim 6, wherein a resistanceof the first common signal line, a resistance of the second commonsignal line, and a resistance of the third common signal line are allless than or equal to 300Ω; and a resistance of the feedback signal lineis less than or equal to 1000 Ω.
 9. The array substrate according toclaim 1, wherein the at least one feedback signal line and the at leastone first common signal line are made of a same material and disposed ina same layer.
 10. The array substrate according to claim 1, wherein theat least one first common signal line, the connecting lead and theconductive frame are made of a same material and disposed in a samelayer.
 11. The array substrate according to claim 1, further comprising:data lines disposed on the base, the data lines being arranged closer tothe base than the common electrode in a direction perpendicular to thebase; wherein orthogonal projections of the data lines on the base atleast partially overlap with an orthogonal projection of the commonelectrode on the base.
 12. The array substrate according to claim 1,wherein the array substrate has a plurality of sub-pixel regions; thecommon electrode includes a plurality of sub-electrodes and a pluralityof first conductive patterns; and a sub-electrode is located in at leastone sub-pixel region, and adjacent sub-electrodes are coupled through atleast one first conductive pattern.
 13. A display apparatus, comprising:the array substrate according to claim 1; and a circuit board bonded tothe bonding region in the array substrate; the circuit board including acontrol circuit, and the control circuit being coupled to the firstcommon signal line and the feedback signal line in the array substrate;wherein the control circuit is configured to generate the firstcompensation common voltage signal according to the common voltagesignal transmitted by the feedback signal line, and transmit the firstcompensation common voltage signal to the first common signal line. 14.The display apparatus according to claim 13, wherein the control circuitincludes: an inverter coupled to the feedback signal line; and theinverter being configured to invert the common voltage signaltransmitted by the feedback signal line; and a first operationalamplifier coupled to the inverter and the first common signal line; thefirst operational amplifier being configured to amplify an invertedsignal from the inverter to generate the first compensation commonvoltage signal, and transmit the first compensation common voltagesignal to the first common signal line.
 15. The display apparatusaccording to claim 14, wherein the display area further includes aproximal region proximate to the bonding region; the array substratefurther includes at least one second common signal line disposed on thebase, the at least one second common signal line is coupled to a portionof the common electrode located in the proximal region, and the at leastone second common signal line extends to the bonding region and isconfigured to be coupled to the circuit board; the control circuitfurther includes: a second operational amplifier coupled to the inverterand a second common signal line; the second operational amplifier beingconfigured to amplify the inverted signal from the inverter to generatea second compensation common voltage signal, and transmit the secondcompensation common voltage signal to the second common signal line; andan amplification factor of the second operational amplifier being lessthan an amplification factor of the first operational amplifier.
 16. Thedisplay apparatus according to claim 15, wherein the display areafurther includes a proximal region proximate to the bonding region and amiddle region located between the distal region and the proximal region;the array substrate further includes at least one third common signalline disposed on the base, the at least one third common signal line iscoupled to a portion of the common electrode located in the middleregion, and the at least one third common signal line extends to thebonding region and is configured to be coupled to the circuit board; thecontrol circuit further includes: a third operational amplifier coupledto the inverter and a third common signal line; the third operationalamplifier being configured to amplify the inverted signal from theinverter to generate a third compensation common voltage signal, andtransmit the third compensation common voltage signal to the thirdcommon signal line; and an amplification factor of the third operationalamplifier being less than the amplification factor of the firstoperational amplifier; and the amplification factor of the thirdoperational amplifier being greater than the amplification factor of thesecond operational amplifier.
 17. The display apparatus according toclaim 14, wherein the display area further includes a proximal regionproximate to the bonding region and a middle region located between thedistal region and the proximal region; the array substrate furtherincludes at least one third common signal line disposed on the base, theat least one third common signal line is coupled to a portion of thecommon electrode located in the middle region, and the at least onethird common signal line extends to the bonding region and is configuredto be coupled to the circuit board; the control circuit furtherincludes: a third operational amplifier coupled to the inverter and athird common signal line; the third operational amplifier beingconfigured to amplify the inverted signal from the inverter to generatea third compensation common voltage signal, and transmit the thirdcompensation common voltage signal to the third common signal line; andan amplification factor of the third operational amplifier being lessthan the amplification factor of the first operational amplifier.
 18. Acontrol method of the display apparatus according to claim 13,comprising: transmitting, by the feedback signal line, the commonvoltage signal of the portion of the common electrode located in thedistal region to the control circuit in the circuit board; andgenerating, by the control circuit, the first compensation commonvoltage signal according to the common voltage signal transmitted by thefeedback signal line, and transmitting, by the control circuit, thefirst compensation common voltage signal to the first common signalline, so as to compensate for the common voltage signal of the portionof the common electrode located in the distal region.
 19. The controlmethod according to claim 18, wherein the display area further includesa proximal region proximate to the bonding region and a middle regionlocated between the distal region and the proximal region; and the arraysubstrate further comprises: at least one second common signal linedisposed on the base, the at least one second common signal line beingcoupled to a portion of the common electrode located in the proximalregion, and the at least one second common signal line extending to thebonding region and being configured to be coupled to the circuit board;a second common signal line being configured to transmit the commonvoltage signal or a second compensation common voltage signal from thecircuit board to the portion of the common electrode located in theproximal region; at least one third common signal line disposed on thebase, the at least one third common signal line being coupled to aportion of the common electrode located in the middle region, and the atleast one third common signal line extending to the bonding region andbeing configured to be coupled to the circuit board; a third commonsignal line being configured to transmit a third compensation commonvoltage signal from the circuit board to the portion of the commonelectrode located in the middle region; the control method furthercomprising: generating, by the control circuit, the second compensationcommon voltage signal according to the common voltage signal transmittedby the feedback signal line, and transmitting, by the control circuit,the second compensation common voltage signal to the second commonsignal line, so as to compensate for a common voltage signal of theportion of the common electrode located in the proximal region; and/or,generating, by the control circuit, the third compensation commonvoltage signal according to the common voltage signal transmitted by thefeedback signal line, and transmitting, by the control circuit, thethird compensation common voltage signal to the third common signalline, so as to compensate for a common voltage signal of the portion ofthe common electrode located in the middle region.